Duplex edge-folding and seam-closing machine.



Ive 1850.614.

v 1 J. BINGHAM. DUPLEX EDGE FOLDING AND SEAM CLOSING MACHINE.

APPLICATION FILED JUNE 4. 1906.

PATENTED APR. 16, 1907.

3 SHEETSSH-EET 1.

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I 1m 850,614. PATENTED APR.16, 1907.

J. BINGHAM. v DUPLEX EDGE FOLDING'AND SBAM CLOSING MACHINE.

APPLICATION FILED JUNE 4. 1906.

' s SHEBTS-SHEBT 2.

Witnesses Ww g QZK/ZLEAZZA\ 'rus NORRIS rsrERs cm, WASHINGTON, n. c.

P'ATBNTED APR. 16, 1 907.

4 v J. BINGHAM.

DUPLEX EDGE FOLDING AND SEAM CLOSING MACHINE.

APPLICATION 11,212 JUNE 4, 1906.

3 SHEETS-SHIFET 3.

nnrrnn STATES Parana prion.

JEREMIAH BINGHAM, OF TOLEDO, OHIO, ASSIGNOR T THE TOLEDO MACHINE ANDTOOLCOMPANY, OF TOLEDO, OHIO, A CORPORA- TION OF OHIO.

Specification of Letters Patent.

Patented April 16, 1907.

Application filed June 4.1906. Serial 110,320,029.

To all] whom 2Z2; may concern:

Be it known that I, JEREMIAH BINGHAM, a citizen of the United States,and a resident of Toledo, in the county of Lucas and State of Ohio, haveinvented a certain new and useful improved Duplex Edge-Folding andSeam-Closing Machine; and 1 do hereby declare the following to be afull, clear, and eXact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame,

- upon machines of this kind, whereby to increase their efficiency andpracticability and enhance their commercial value.

A further object of my invention is the provision, in combination withan attachment of this class, of gage means for the work, which means isadjustable to increase or diminish the width of the terminal fold andalso to provide a tapering folded edge and seam, which is desirable forcertain kinds of work, thus making it possible to have the fold or seamstart from wide to narrow, or vice versa, from either end.

The invention is fully described in the following specification andillustrated in the accompanying drawings, in which Figure 1 is a sideelevation of a press equipped with my improved edge-folding andseam-closing attachment, with a portion of the press-frame broken away.Fig 2 is an enlarged front view of a portion of the slide oroperating-head and the horn carrying the edge-folding means, the samebeing in normal or inoperative position. Fig. 3 is a side elevation ofthe parts shown in Fig. 2.. Fig. 4 is a vertical cross-section of theoperatinghead and horn, with the latter shown partially in section onthe lines a: x and 0c 00 in Fig. 3. Fig. 5 is a central verticallongitudinal section of said parts. Fig. 6 is a cross-section of aportion of the edge-folding head, showing the swinging blade and thecompression-spring by which it is normally held in one position. Fig. 7is a partial perspective view of the horn in cross-section, illustratingthe gage-adjusting means with the screwretaining plate removed. Fig. 8is a front elevation of the invention, illustrating a modifiedarrangement of the parts; and

Figs. 9 and 10 illustrate the edges of the work from the initial to thefinal stages of the operation in the formation of an outer and innerseam, respectively.

Referring to the drawings, 1 indicates the frame of a power-press of anysuitable construction, and 2 the plunger or operatinghead thereof, whichcarries the pressure-foot 3 at its lower end.

Mounted below the pressure-foot 3 is a horn 4, which is secured to theframe 1 by an arm or shank 5, projecting from its inner end and beingsecured within an opening provided therefor in the frame. Interposedbetween this horn and the pressure-foot 3 is a movable head 6, whichextends the length of the horn and is normally spaced therefrom by theinterposed strip 7, by which it is carried. This strip has its loweredge mounted within a suitable groove in the upper surface of the horn 4and is fixed thereto by screws Sand has its upper edge operating withinan alining groove 9, provided longitudinally in the under surface of thehead. The head 6 is movably retained to the strip 7 by means of screws10, which pass loosely through vertical apertures in said strip and hornand have their headed ends operating in pockets 1O in the horn, as shownin Fig. 5, and is yieldingly supported above the spacingstrip 7, due tothe mounting of a plurality of coiled compression-springs 11 withinpockets 11 in said strip, the upper ends of which coact with the underside of the head 6, as shown in Fig. 5.

Within a suitable groove provided longitudinally in the surface of thehorn 4 at one side of the strip 7 is mounted a female edgefolding die12, which is shown in the drawings as comprising two flush paralleldieplates, the upper inner edge of the outer of which is beveled, asshown, to form a longi tudinal recess in the surface of the die, onewall of which is tapered. This die is set at a slight angle to the planeof movement of' the head 6, so that the Wall of the recess in oppositionto the beveled wall thereof will stand at I or legs 19. The screws 21are each prevented a slight incline, as shown in Figs. 2 and 4, thuscausing the outer or terminal fold at the edge of the work to inclineslightly outwardly, as shown at a in Fig. 9, to facilitate the seamclosing operation. Mounted in a groove 13, extending lengthwise of thehead 6 in superimposed relation to the female die 12, is a male-dieplate or blade 14, which hangs loosely from the screws 15 in the head ina manner enabling it to have a slight inward swinging movement and hasits lower outer edge beveled, as shown, to adapt such surface to coactwith the beveled surface of the female die 12. As the blade 14 entersthe recess in the die 12 and strikes the beveled surface thereof on thedownstroke of the head 6 it will be caused thereby to swing laterallywithin its groove, which is enlarged for that purpose, so as toautomatically assume the inclination of the inner wall of said recess,thus causing the interposed work to be driven within the recess andformed in the required shape. The blade 14 is normally retained invertical position, or at its outer limit of swinging movement, by one ormore coiled compression-springs 15, which are mounted within pockets 15in the side of the head 6 and have their thrust outwardly against theinner surface of the blade, as shown in Fig. 6. The horn 4 and head 6are also provided on the-opposite side of the strip 7 with registeringdies 16 and 17 for forming the folds on the opposite edge of the work tothat operated on by the dies 12 and 14. The dies 16 and 17, however, areplaced in reversed positions to the dies 12 and 14 to permit aninterlocking of the two folded edges, as shown at b in Fig. 9, thefemale die 16 being carried by the head 6, while the male die or blade17 is carried by the horn 4. The dies 16 and 17 are both set rigid andin the plane of movement of the head, as it is only necessary to formthe terminal fold of one edge on an incline or angle to the clenching orseam-closing movement of the pressurefoot 3, by which the seam issubsequently closed. Either or both male dies, however, may be mountedloose for this purpose, if desired.

Mounted on the surface of the horn 4 intermediate each die 12 and 17thereon and the strip 7 is an adjustable gage-bar 18. Each of these barsis carried by a set of pins or legs 19, which project downwardlytherefrom into pockets 20 in the horn. .These pockets are sufficientlylarge to enable the pins or legs 19 to have lateral adjustment thereintransversely of the horn to effect a transverse adjustment of theattached bar. An adjustment of the bar 18 is effected by a turning ofthe adjusting-screws 21, which screws are mounted in the horn inapertures intersecting the pockets 20, with their inner fromlongitudinal movement by a plate 22, which is secured within a pocket 23in the side of the horn by a retaining-screw 24 and coacts with a flange21 on the screw 21, as shown in Fig. 4. With this construction of gageit will be apparent that either a parallel or tapering adjustmentthereof relative to the associated dies may be provided, so as to form afolded edge and seam which is of equal width throughout its length orgradually widens from either end thereof, as is required in certainkinds of work.

folding dies, is also adapted to act as an anvil or bed on which theinterlocked edges of the work are laid to receive the thrust of thepressure-foot 3 for the purpose of closing the seam. For this purposethe upper surface of the head is suitably shaped to receive the work andis provided with a series of gagepins 25, which aline longitudinallythereof.

being mounted in pockets in the head and yieldingly retained in elevatedpositions by coiled compression-springs 26, which are mounted in thebases of the pockets, as shown in Figs. 4 and 5. A die 27' is carried bythe pressure-foot 3 in position to coac t with the seam of the workplaced on the head 6 when the foot is lowered and press it into thedesired shape.

The operation of my invention is as fol lows: The edges of the blank arefirst placed over the opposite sides of the horn 3 in contact with theedge-folding dies carried thereby and with their edges in abutment withthe gage-bars 18 thereon, which are properly adjusted to give thedesired width of fold. The press is then thrown into operation to effecta downstroke of the pressure-foot 3 and a consequent coacting of thedies of each set to form the edge folds in the interposed work. As theswinging male die or blade 14 descends upon the work it is caused toautomatically adjust itself to the incline of the recess in the femaledie 12, thus forming the edge fold of the work at that side at an angleto' the direction of movement of the diecar rying head 6, as shown at ain Fig. 9. After the edge folds are formed they are locked together inthe manner shown at b in Fig. 9 and placed over the head 6 with thepoint of the lower or inner 'fold abutting the gagepins 25, thusproperly positioning the seam to receive the closing or finishing thrustof the pressurefoot 3, which is then operated for that purpose. As thefolds are crushed against the head the gage-pins 25 disappear withintheir receiving-pockets and the seam c in Fig. 9 is formed.

In Fig. 8 is illustrated a modified form of the attachment in which theedge-folding parts are carried by the pressure-foot of the.

5 ends threaded transversely through the pins 1 press-plunger or slide.In this construction The head 6, in addition to carrying theedge Thesepins are of the disappearing type,

28 indicates the pressure-foot, which is adapted to be bolted to thepress-plunger or slide; 29, a die-plate which is secured to the undersurface of the pressure-foot and car ries the swinging male die andfixed female die 31; 32, a second die-plate or bar which is yieldinglyspaced from the plate 29 by the strip 33 and interposedcompression-springs (not shown) and carries the dies 34. for coactingwith the dies 30 and 31 on the plate 29, v

and a horn with which the base of the plate 32 coacts to close the seamof the work.

The operation of this construction is substantially the same as that ofthe other construction, except that the reversal of the position of theparts requires that the edges of the blank be first placed between thedie-plate 29, carried by the pressure-foot 28, and the yieldinglpassociated die-plate 32 for the purpose of being folded and then placedin interlocked position over the horn 35 to re eeive the seam-closingthrust of the under side of the die-plate or bar 32.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In combination, two relatively movable parts, edge-folding diescarried by said parts, and a gage member carried by one of said partsand mounted for horizontal angular adjustment relative to the die onsaid part.

2. In combination, two relatively movable parts, edge-folding diescarried by said parts and one part having pockets formed therein, agage-bar adjustably mounted on the part having the pockets and havingportions projecting freely within the pockets, and means cooperatingwith the portions of the bar projeeting within the pockets and with thepocket part for effecting an adjustment of the bar.

3. The combination with one of the diecarrying parts of an edge-foldingapparatus, said part having pockets therein, of a gagebar adjustablymounted thereon and having legs projecting within the pockets forlateral movement therein, adjusting-screws carried by said part andhaving their inner ends threaded transversely to the legs whereby tocause a lateral adjustment of the gage-bar when turned. v

- 4. In combination, a die-carrying part, a head yieldingly spacedtherefrom, edge-folding dies carried in registering relation by saidpart and head, a portion of said dies being mounted to have lateralswinging movement relative to the carry ing part whereby it may assume aposition at an angle to the plane of movement of the head, means fornormally retaining the swinging dies in one position relative to thecarr; ing part, and means for apply ing a compressing force to the head.

5. In combination, a horn, a head yieldingly spaced therefrom,work-gaging bars adjustably carried by the horn, edge-folding diescarried in registering relation by the horn and head, the female diehaving its recess disposed at a slight angle to theplane of movement ofthe head and the male die being mounted to have a movement relative toits carrying part, whereby it is enabled to automatically adjust itselfto the incline of the female recess, and means for apply ing force tothe head.

6. In combination, a die-carrying part, a normally spaced headyieldingly carried thereby, a male and a female edge-folding die carriedby the head, registering male and female dies carried by the die-carrying part, an adjustable gagebar for each set of cooperating dies, andmeans for apply ing force to the head.

7. The combination with one of the die carrying parts of an edge-foldingapparatus, of a gage-bar movably carried thereby, and screws cooperatingwith the bar and part for eflecting an adjustment of the bar whenturned.

8. In combination, a pressure-foot, a horn, a member disposed betweensaid parts and yieldingly carried by one, cooperating edgefolding diescarried by said member and the part by which it is yieldingly carried,and cooperating seam-closing surfaces provided on said member and theother of said parts.

In testimony whereof I have hereunto signed my name to thisspecification in the presence of two subscribing witnesses.

JEREMIAH BINGHAM.

Witnesses:

OnAs. W. GREENING, Louis J HINDE.

